Rate of Convergence of Positive Series |
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Authors: | O B Skaskiv |
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Institution: | (1) Lviv National University, Lviv, Ukraine |
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Abstract: | We investigate the rate of convergence of series of the form where λ = (λn), 0 = λ0 < λn ↑ + ∞, n → + ∞, β = {βn: n ≥ 0} ⊂ ℝ+, and τ(x) is a nonnegative function nondecreasing on 0; +∞), and where the sequence λ = (λn) is the same as above and f (x) is a function decreasing on 0; +∞) and such that f (0) = 1 and the function ln f(x) is convex on 0; +∞).__________Translated from Ukrains’kyi Matematychnyi Zhurnal, Vol. 56, No. 12, pp. 1665 – 1674, December, 2004. |
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